What does P & H stand for?

Patton, Jr., and Heath's Reports [Virginia Special Court of Appeals] [A publication] (DLA)

Postage and Handling (NTIO)

Hydrogen Ion Concentration (MAE)

Parallel Haskell [Telecommunications] (ACOL)

Percent Hydrogen (SSD)

Pondus Hydrogenii (SAUS)

Potential Hydrogen (WDAA)

Pouvoir Hydrogene [Hydrogen Power] [Negative logarithm of effective H ion concentration] [Chemistry]

Pawling and Harnischfeger [Off-Highway equipment]

Postage and Handling (WDMC)

Prentice-Hall, Inc. [Publishers]

Pier to House [Classified advertising] (ADA)

Postage and Handling [Shipping]